package org.andengine.entity.primitive.vbo;

import org.andengine.entity.primitive.Mesh;
import org.andengine.opengl.vbo.DrawType;
import org.andengine.opengl.vbo.HighPerformanceVertexBufferObject;
import org.andengine.opengl.vbo.VertexBufferObjectManager;
import org.andengine.opengl.vbo.attribute.VertexBufferObjectAttributes;

/**
 * (c) Zynga 2012
 *
 * @author Nicolas Gramlich <ngramlich@zynga.com>
 * @since 18:46:51 - 28.03.2012
 */
public class HighPerformanceMeshVertexBufferObject extends HighPerformanceVertexBufferObject implements IMeshVertexBufferObject {
    // ===========================================================
    // Constants
    // ===========================================================

    // ===========================================================
    // Fields
    // ===========================================================

    private final int mVertexCount;

    // ===========================================================
    // Constructors
    // ===========================================================

    public HighPerformanceMeshVertexBufferObject(final VertexBufferObjectManager pVertexBufferObjectManager, final float[] pBufferData, final int pVertexCount, final DrawType pDrawType, final boolean pAutoDispose, final VertexBufferObjectAttributes pVertexBufferObjectAttributes) {
        super(pVertexBufferObjectManager, pBufferData, pDrawType, pAutoDispose, pVertexBufferObjectAttributes);

        this.mVertexCount = pVertexCount;
    }

    // ===========================================================
    // Getter & Setter
    // ===========================================================

    // ===========================================================
    // Methods for/from SuperClass/Interfaces
    // ===========================================================

    @Override
    public void onUpdateColor(final Mesh pMesh) {
        final float[] bufferData = this.mBufferData;

        final float packedColor = pMesh.getColor().getABGRPackedFloat();

        for (int i = 0; i < this.mVertexCount; i++) {
            bufferData[(i * Mesh.VERTEX_SIZE) + Mesh.COLOR_INDEX] = packedColor;
        }

        this.setDirtyOnHardware();
    }

    @Override
    public void onUpdateVertices(final Mesh pMesh) {
        /* Since the buffer data is managed from the caller, we just mark the buffer data as dirty. */

        this.setDirtyOnHardware();
    }

    // ===========================================================
    // Methods
    // ===========================================================

    // ===========================================================
    // Inner and Anonymous Classes
    // ===========================================================
}